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h-parmeters

If a two-port...

Question

If a two-port network is reciprocal, then we have with the usual notation, the following relationship

A

h_{12} = h_{21}

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B

h_{12} = - h_{21}

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C

h_{11} = h_{22}

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D

h_{11} h_{22} = h_{12} h_{21} = 1

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Solution

The correct option is B $h_{12} = - h_{21}$
For reciprocity,
$h_{12} = - h_{21}$

For symmetry
$∣ ∣ ∣ \begin{matrix} h_{11} & h_{12} h_{21} & h_{22} \end{matrix} ∣ ∣ ∣ = 1$

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